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Convention Paper

Further Investigations into Improving STI’s Recognition of the Effects of Poor Frequency Response on Subjective Intelligibility

Authors: Leembruggen, Glenn; Hippler, Marco; Mapp, Peter

AES Convention 128 · Paper 8051 · May 2010

Abstract

Previous work has highlighted deficiencies in the ability of the STI metric to satisfactorily recognise the subjective loss of intelligibility that occurs with sound systems having poor frequency responses, particularly in the presence of reverberation. In a recent paper, we explored the changes to STI values resulting from a range of dynamic speech spectra taken over differing time lengths with different filter responses. That work included determining the effects on STI values of three alternative spreading functions simulating the ear’s upward masking mechanism. This paper extends that work and explores the effects on STI values of two masking methods used in MPEG-1 audio coding.

Details

Published in
AES Convention 128
AES Convention
128
Paper number
8051
Publication date
May 6, 2010
Session subject
Noise Reduction and Speech Intelligibility
Affiliation
Acoustic Directions Pty Ltd., ICE Design, Sydney, Australia; University of Applied Sciences Cologne, Cologne, Germany, University of Sydney, Sydney, Australia; Peter Mapp and Associates, Colchester, UK (See document for exact affiliation information.)
Type
Convention Paper